#task{
    float: left;
    width: 100%;
}
#task-title{
    width: 1200px;
    margin: 0 auto;
}
#task-all{
    width: 1200px;
    margin: 0 auto;
}
#task-left-block{
    float: left;
    position: relative;
    border-top: solid 3px #03a9f4;
    width: 14%;
    background-color: white;
    padding: 25px 0px;
    box-shadow: 8px 4px 20px rgba(0, 0, 0, 0.09);
    height: 500px;
    margin-bottom: 20px;

}
#task-left-block li{
    text-align: center;
    margin: 10px 0px;
    height: 40px;
    padding: 5px;
}
#task-content{
    float: left;

    width: 86%;
    background-color: #fbfbfb;
    z-index: -1;
    margin-top: 20px;
    padding: 20px 50px;
}
#teacher_add_course>div{
    margin: 20px 0;
    height: 38px;
}
#teacher_add_course label{
    margin-left: 70px;
}
.required{
    float: left;
}
#teacher_add_course_立即添加,#course_edit_button,#course_delete_button{
    margin: 6px 0;
    box-shadow: 1px 1px 15px rgba(0, 0, 0, 0);
    border-radius: 15px;
background-color: #03a9f4;
    cursor: pointer;
width: 100%;
    height: 51px;
/*margin-top: 80px;*/
font-size: 25px;
border: 0px;
color: white;
transition: background-color 0.3s;
-moz-transition: background-color 0.3s;
-webkit-transition: background-color 0.3s;
-o-transition: background-color 0.3s;
    transition: box-shadow 0.3s;
    -moz-transition: box-shadow 0.3s;
    -webkit-transition: box-shadow 0.3s;
    -o-transition: box-shadow 0.3s;
}
#teacher_add_course_立即添加:hover,#course_edit_button{

    background-color: #32b7f3;
    box-shadow: 1px 1px 15px rgba(76, 170, 19, 0.43);

}
#course_delete_button{background-color: #fbfbfb;
    border: solid 2px #F44336;
    color: #F44336;
    transition: background-color 0.3s;
    -moz-transition: background-color 0.3s;
    -webkit-transition: background-color 0.3s;
    -o-transition: background-color 0.3s;}
#course_delete_button:hover{
    color:white;
    background-color: #fb5a4f;
    box-shadow: 1px 1px 15px rgba(76, 170, 19, 0.43);

}
/*课程管理*/
#added_title h1{
    display: block;
    font-size: 26px;
    font-weight: 500;
    color: #666666;
    letter-spacing: 3px;
    float: left;
    margin: 5px;
}
#added_course_list{
    clear: both;
}
#toaddcourse{
    background: #03A9F4;
    width: 90px;
    height: 30px;
    float: left;
    line-height: 30px;
    text-align: center;
    color: white;
    border-radius: 8px;
    letter-spacing: 1px;
    font-size: 16px;
    margin-top: 8px;
}
.added_course_img{
    width: 150px;
    height: 115px;
    background-color: #efeded;
    float: left;
    margin: 8px;
}
.added_course_name{
    display: block;
    font-size: 40px;
    font-weight: 500;
    color: #333333;
    letter-spacing: 2px;
    margin: 0px 0px 0px 155px;
}
.added_course_teacher{
    display: block;
    font-size: 15px;
    font-weight: 500;
    color: #3e3e3e;
    margin: 3px 0px 0px 158px;
}
.added_course{
    width: 100%;
    height: 130px;
    background-color: white;
    box-shadow: 0 0px 20px rgba(0, 0, 0, 0.05);
    margin: 0px 10px 15px 0px;
    float: left;
    position: relative;
}
.added_course_intro{
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: #969696;
    margin: 3px 0px 0px 158px;
    width: 500px;
}
.added_course_edit{
    position: absolute;
    right: 30px;
    top: 40px;
    opacity: 0.6;
}
.added_course_edit:hover{
    opacity: 1;
}
#added_title{
    height: 30px;
    margin-bottom: 30px;
    float: left;
}